package com.itheima.reggie.controller;


import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.itheima.reggie.common.R;
import com.itheima.reggie.entity.Employee;
import com.itheima.reggie.service.EmployeeService;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.DigestUtils;
import org.springframework.web.bind.annotation.*;

import javax.servlet.http.HttpServletRequest;
import java.time.LocalDateTime;

@Slf4j
@RestController
@RequestMapping("/employee")
public class EmployeeController {

    @Autowired
    private EmployeeService employeeService;


    /**
     * 员工登录功能
     * @param request
     * @param employee
     * @return
     */
    @PostMapping("/login")
    public R<Employee> login (HttpServletRequest request, @RequestBody Employee employee) {
        //1.页面提交的密码password进行md5加密
        String password = employee.getPassword();
        password= DigestUtils.md5DigestAsHex(password.getBytes());

        //2.根据页面提交的用户名username查询数据库
        LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(Employee::getUsername, employee.getUsername());
        Employee emp = employeeService.getOne(queryWrapper);

        //3.如果查询到的对象为空，则返回登陆失败结果
        if (emp == null){
            return R.error("登陆失败");
        }

        //4.根据提交的密码（加密后）和数据库的密码进行比对，如果不一致，则返回登陆失败
        if (!password.equals(emp.getPassword())){
            return R.error("登陆失败");
        }

        //5.查看员工状态是否已禁用，如果以禁用，则返回登陆失败
        if (emp.getStatus() == 0){
            return R.error("该账号已禁用");
        }

        //6.登陆成功，将员工id存入session
        request.getSession().setAttribute("employee",emp.getId());
        return R.success(emp);

    }

    /**
     * 退出功能
     * @param request
     * @return
     */
    @PostMapping("/logout")
    public R<String> logout (HttpServletRequest request){

        //清除session中保存的当前登录员工id
        request.getSession().removeAttribute("employee");
        return R.success("退出成功");

    }


    /**
     * 新增员工
     * @param employee
     * @return
     */
    @PostMapping
    public R<String> save(HttpServletRequest request, @RequestBody Employee employee){
        log.info("新增员工，员工信息：{}",employee.toString());
        //设置默认密码123456，并且md5加密
        employee.setPassword(DigestUtils.md5DigestAsHex("123456".getBytes()));

        //status不需要处理，数据库默认是1

/*        //create_time 和 update_time ,设置为当前系统时间  LocalDateTime.now()
        employee.setCreateTime(LocalDateTime.now());
        employee.setUpdateTime(LocalDateTime.now());

        //create_user 和 update_user 创建人和修改人，应该是当前登陆人，从session中获取
        Long empId = (long)request.getSession().getAttribute("employee");
        employee.setCreateUser(empId);
        employee.setUpdateUser(empId);*/

        employeeService.save(employee);

        return R.success("新增员工成功");
    }


    /**
     * 分页查询
     * @param page
     * @param pageSize
     * @param name
     * @return
     */
    @GetMapping("/page")
    public R<Page> page(int page,int pageSize,String name){
        log.info("page = {},pageSize = {},name = {}",page,pageSize,name);

        //分页构造器
        Page pageInfo = new Page(page,pageSize);
        //条件构造器
        LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper<>();
        //添加过滤条件
        queryWrapper.like(StringUtils.isNotEmpty(name),Employee::getName,name);

        //添加排序条件
        queryWrapper.orderByDesc(Employee::getUpdateTime);

        employeeService.page(pageInfo,queryWrapper);
        return R.success(pageInfo);


    }

    /**
     * 根据id修改员工信息 --- 启用、禁用员工账号
     * @param request
     * @param employee
     * @return
     */
    @PutMapping
    public R<String> update(HttpServletRequest request,@RequestBody Employee employee){
        log.info(employee.toString());

/*        Long empId = (Long)request.getSession().getAttribute("employee");

        employee.setUpdateTime(LocalDateTime.now());
        employee.setUpdateUser(empId);*/

        employeeService.updateById(employee);

        return R.success("员工信息修改成功");
    }

    /**
     * 编辑员工信息
     * @param id
     * @return
     */
    @GetMapping("/{id}")
    public R<Employee> getById(@PathVariable Long id){

        Employee employee = employeeService.getById(id);
        if(employee != null){
            return R.success(employee);
        }
        return R.error("没有查询到对应的员工信息");
    }








}
